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Add __pender error to the FAQ

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Dániel Buga 2025-01-21 22:25:35 +01:00
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docs/pages/faq.adoc
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@ -117,6 +117,20 @@ If you are in the early project setup phase and not using anything from the HAL,
use embassy_stm32 as _;
----
Another common error you may experience is:
[source,text]
----
= note: rust-lld: error: undefined symbol: __pender
>>> referenced by mod.rs:373 (src/raw/mod.rs:373)
>>> embassy_executor-e78174e249bca7f4.embassy_executor.1e9d60fc90940543-cgu.0.rcgu.o:(embassy_executor::raw::Pender::pend::h0f19b6e01762e4cd) in archive [...]libembassy_executor-e78174e249bca7f4.rlib
----
There are two possible causes to this error:
* You are using `embassy-executor` withuout enabling one of the architecture-specific features, but you are using a HAL that does not bring its own executors. For example, for Cortex-M (like the RP2040), you need to enable the `arch-cortex-m` feature of `embassy-executor`.
* You are not using `embassy-executor`. In this case, you need to enable the one of the `generic-queue-X` features of `embassy-time`.
== Error: `Only one package in the dependency graph may specify the same links value.`
You have multiple versions of the same crate in your dependency tree. This means that some of your